summaryrefslogtreecommitdiffstats
path: root/drivers/scsi/sym53c8xx_2/sym_fw.c
blob: c6db61b61de3a5b9b9ede1dad9ed112591cd5e3d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Device driver for the SYMBIOS/LSILOGIC 53C8XX and 53C1010 family 
 * of PCI-SCSI IO processors.
 *
 * Copyright (C) 1999-2001  Gerard Roudier <groudier@free.fr>
 *
 * This driver is derived from the Linux sym53c8xx driver.
 * Copyright (C) 1998-2000  Gerard Roudier
 *
 * The sym53c8xx driver is derived from the ncr53c8xx driver that had been 
 * a port of the FreeBSD ncr driver to Linux-1.2.13.
 *
 * The original ncr driver has been written for 386bsd and FreeBSD by
 *         Wolfgang Stanglmeier        <wolf@cologne.de>
 *         Stefan Esser                <se@mi.Uni-Koeln.de>
 * Copyright (C) 1994  Wolfgang Stanglmeier
 *
 * Other major contributions:
 *
 * NVRAM detection and reading.
 * Copyright (C) 1997 Richard Waltham <dormouse@farsrobt.demon.co.uk>
 *
 *-----------------------------------------------------------------------------
 */

#include "sym_glue.h"

/*
 *  Macros used for all firmwares.
 */
#define	SYM_GEN_A(s, label)	((short) offsetof(s, label)),
#define	SYM_GEN_B(s, label)	((short) offsetof(s, label)),
#define	SYM_GEN_Z(s, label)	((short) offsetof(s, label)),
#define	PADDR_A(label)		SYM_GEN_PADDR_A(struct SYM_FWA_SCR, label)
#define	PADDR_B(label)		SYM_GEN_PADDR_B(struct SYM_FWB_SCR, label)


#if	SYM_CONF_GENERIC_SUPPORT
/*
 *  Allocate firmware #1 script area.
 */
#define	SYM_FWA_SCR		sym_fw1a_scr
#define	SYM_FWB_SCR		sym_fw1b_scr
#define	SYM_FWZ_SCR		sym_fw1z_scr
#include "sym_fw1.h"
static struct sym_fwa_ofs sym_fw1a_ofs = {
	SYM_GEN_FW_A(struct SYM_FWA_SCR)
};
static struct sym_fwb_ofs sym_fw1b_ofs = {
	SYM_GEN_FW_B(struct SYM_FWB_SCR)
};
static struct sym_fwz_ofs sym_fw1z_ofs = {
	SYM_GEN_FW_Z(struct SYM_FWZ_SCR)
};
#undef	SYM_FWA_SCR
#undef	SYM_FWB_SCR
#undef	SYM_FWZ_SCR
#endif	/* SYM_CONF_GENERIC_SUPPORT */

/*
 *  Allocate firmware #2 script area.
 */
#define	SYM_FWA_SCR		sym_fw2a_scr
#define	SYM_FWB_SCR		sym_fw2b_scr
#define	SYM_FWZ_SCR		sym_fw2z_scr
#include "sym_fw2.h"
static struct sym_fwa_ofs sym_fw2a_ofs = {
	SYM_GEN_FW_A(struct SYM_FWA_SCR)
};
static struct sym_fwb_ofs sym_fw2b_ofs = {
	SYM_GEN_FW_B(struct SYM_FWB_SCR)
	SYM_GEN_B(struct SYM_FWB_SCR, start64)
	SYM_GEN_B(struct SYM_FWB_SCR, pm_handle)
};
static struct sym_fwz_ofs sym_fw2z_ofs = {
	SYM_GEN_FW_Z(struct SYM_FWZ_SCR)
};
#undef	SYM_FWA_SCR
#undef	SYM_FWB_SCR
#undef	SYM_FWZ_SCR

#undef	SYM_GEN_A
#undef	SYM_GEN_B
#undef	SYM_GEN_Z
#undef	PADDR_A
#undef	PADDR_B

#if	SYM_CONF_GENERIC_SUPPORT
/*
 *  Patch routine for firmware #1.
 */
static void
sym_fw1_patch(struct Scsi_Host *shost)
{
	struct sym_hcb *np = sym_get_hcb(shost);
	struct sym_fw1a_scr *scripta0;
	struct sym_fw1b_scr *scriptb0;

	scripta0 = (struct sym_fw1a_scr *) np->scripta0;
	scriptb0 = (struct sym_fw1b_scr *) np->scriptb0;

	/*
	 *  Remove LED support if not needed.
	 */
	if (!(np->features & FE_LED0)) {
		scripta0->idle[0]	= cpu_to_scr(SCR_NO_OP);
		scripta0->reselected[0]	= cpu_to_scr(SCR_NO_OP);
		scripta0->start[0]	= cpu_to_scr(SCR_NO_OP);
	}

#ifdef SYM_CONF_IARB_SUPPORT
	/*
	 *    If user does not want to use IMMEDIATE ARBITRATION
	 *    when we are reselected while attempting to arbitrate,
	 *    patch the SCRIPTS accordingly with a SCRIPT NO_OP.
	 */
	if (!SYM_CONF_SET_IARB_ON_ARB_LOST)
		scripta0->ungetjob[0] = cpu_to_scr(SCR_NO_OP);
#endif
	/*
	 *  Patch some data in SCRIPTS.
	 *  - start and done queue initial bus address.
	 *  - target bus address table bus address.
	 */
	scriptb0->startpos[0]	= cpu_to_scr(np->squeue_ba);
	scriptb0->done_pos[0]	= cpu_to_scr(np->dqueue_ba);
	scriptb0->targtbl[0]	= cpu_to_scr(np->targtbl_ba);
}
#endif	/* SYM_CONF_GENERIC_SUPPORT */

/*
 *  Patch routine for firmware #2.
 */
static void
sym_fw2_patch(struct Scsi_Host *shost)
{
	struct sym_data *sym_data = shost_priv(shost);
	struct pci_dev *pdev = sym_data->pdev;
	struct sym_hcb *np = sym_data->ncb;
	struct sym_fw2a_scr *scripta0;
	struct sym_fw2b_scr *scriptb0;

	scripta0 = (struct sym_fw2a_scr *) np->scripta0;
	scriptb0 = (struct sym_fw2b_scr *) np->scriptb0;

	/*
	 *  Remove LED support if not needed.
	 */
	if (!(np->features & FE_LED0)) {
		scripta0->idle[0]	= cpu_to_scr(SCR_NO_OP);
		scripta0->reselected[0]	= cpu_to_scr(SCR_NO_OP);
		scripta0->start[0]	= cpu_to_scr(SCR_NO_OP);
	}

#if   SYM_CONF_DMA_ADDRESSING_MODE == 2
	/*
	 *  Remove useless 64 bit DMA specific SCRIPTS, 
	 *  when this feature is not available.
	 */
	if (!use_dac(np)) {
		scripta0->is_dmap_dirty[0] = cpu_to_scr(SCR_NO_OP);
		scripta0->is_dmap_dirty[1] = 0;
		scripta0->is_dmap_dirty[2] = cpu_to_scr(SCR_NO_OP);
		scripta0->is_dmap_dirty[3] = 0;
	}
#endif

#ifdef SYM_CONF_IARB_SUPPORT
	/*
	 *    If user does not want to use IMMEDIATE ARBITRATION
	 *    when we are reselected while attempting to arbitrate,
	 *    patch the SCRIPTS accordingly with a SCRIPT NO_OP.
	 */
	if (!SYM_CONF_SET_IARB_ON_ARB_LOST)
		scripta0->ungetjob[0] = cpu_to_scr(SCR_NO_OP);
#endif
	/*
	 *  Patch some variable in SCRIPTS.
	 *  - start and done queue initial bus address.
	 *  - target bus address table bus address.
	 */
	scriptb0->startpos[0]	= cpu_to_scr(np->squeue_ba);
	scriptb0->done_pos[0]	= cpu_to_scr(np->dqueue_ba);
	scriptb0->targtbl[0]	= cpu_to_scr(np->targtbl_ba);

	/*
	 *  Remove the load of SCNTL4 on reselection if not a C10.
	 */
	if (!(np->features & FE_C10)) {
		scripta0->resel_scntl4[0] = cpu_to_scr(SCR_NO_OP);
		scripta0->resel_scntl4[1] = cpu_to_scr(0);
	}

	/*
	 *  Remove a couple of work-arounds specific to C1010 if 
	 *  they are not desirable. See `sym_fw2.h' for more details.
	 */
	if (!(pdev->device == PCI_DEVICE_ID_LSI_53C1010_66 &&
	      pdev->revision < 0x1 &&
	      np->pciclk_khz < 60000)) {
		scripta0->datao_phase[0] = cpu_to_scr(SCR_NO_OP);
		scripta0->datao_phase[1] = cpu_to_scr(0);
	}
	if (!(pdev->device == PCI_DEVICE_ID_LSI_53C1010_33 /* &&
	      pdev->revision < 0xff */)) {
		scripta0->sel_done[0] = cpu_to_scr(SCR_NO_OP);
		scripta0->sel_done[1] = cpu_to_scr(0);
	}

	/*
	 *  Patch some other variables in SCRIPTS.
	 *  These ones are loaded by the SCRIPTS processor.
	 */
	scriptb0->pm0_data_addr[0] =
		cpu_to_scr(np->scripta_ba + 
			   offsetof(struct sym_fw2a_scr, pm0_data));
	scriptb0->pm1_data_addr[0] =
		cpu_to_scr(np->scripta_ba + 
			   offsetof(struct sym_fw2a_scr, pm1_data));
}

/*
 *  Fill the data area in scripts.
 *  To be done for all firmwares.
 */
static void
sym_fw_fill_data (u32 *in, u32 *out)
{
	int	i;

	for (i = 0; i < SYM_CONF_MAX_SG; i++) {
		*in++  = SCR_CHMOV_TBL ^ SCR_DATA_IN;
		*in++  = offsetof (struct sym_dsb, data[i]);
		*out++ = SCR_CHMOV_TBL ^ SCR_DATA_OUT;
		*out++ = offsetof (struct sym_dsb, data[i]);
	}
}

/*
 *  Setup useful script bus addresses.
 *  To be done for all firmwares.
 */
static void 
sym_fw_setup_bus_addresses(struct sym_hcb *np, struct sym_fw *fw)
{
	u32 *pa;
	u_short *po;
	int i;

	/*
	 *  Build the bus address table for script A 
	 *  from the script A offset table.
	 */
	po = (u_short *) fw->a_ofs;
	pa = (u32 *) &np->fwa_bas;
	for (i = 0 ; i < sizeof(np->fwa_bas)/sizeof(u32) ; i++)
		pa[i] = np->scripta_ba + po[i];

	/*
	 *  Same for script B.
	 */
	po = (u_short *) fw->b_ofs;
	pa = (u32 *) &np->fwb_bas;
	for (i = 0 ; i < sizeof(np->fwb_bas)/sizeof(u32) ; i++)
		pa[i] = np->scriptb_ba + po[i];

	/*
	 *  Same for script Z.
	 */
	po = (u_short *) fw->z_ofs;
	pa = (u32 *) &np->fwz_bas;
	for (i = 0 ; i < sizeof(np->fwz_bas)/sizeof(u32) ; i++)
		pa[i] = np->scriptz_ba + po[i];
}

#if	SYM_CONF_GENERIC_SUPPORT
/*
 *  Setup routine for firmware #1.
 */
static void 
sym_fw1_setup(struct sym_hcb *np, struct sym_fw *fw)
{
	struct sym_fw1a_scr *scripta0;

	scripta0 = (struct sym_fw1a_scr *) np->scripta0;

	/*
	 *  Fill variable parts in scripts.
	 */
	sym_fw_fill_data(scripta0->data_in, scripta0->data_out);

	/*
	 *  Setup bus addresses used from the C code..
	 */
	sym_fw_setup_bus_addresses(np, fw);
}
#endif	/* SYM_CONF_GENERIC_SUPPORT */

/*
 *  Setup routine for firmware #2.
 */
static void 
sym_fw2_setup(struct sym_hcb *np, struct sym_fw *fw)
{
	struct sym_fw2a_scr *scripta0;

	scripta0 = (struct sym_fw2a_scr *) np->scripta0;

	/*
	 *  Fill variable parts in scripts.
	 */
	sym_fw_fill_data(scripta0->data_in, scripta0->data_out);

	/*
	 *  Setup bus addresses used from the C code..
	 */
	sym_fw_setup_bus_addresses(np, fw);
}

/*
 *  Allocate firmware descriptors.
 */
#if	SYM_CONF_GENERIC_SUPPORT
static struct sym_fw sym_fw1 = SYM_FW_ENTRY(sym_fw1, "NCR-generic");
#endif	/* SYM_CONF_GENERIC_SUPPORT */
static struct sym_fw sym_fw2 = SYM_FW_ENTRY(sym_fw2, "LOAD/STORE-based");

/*
 *  Find the most appropriate firmware for a chip.
 */
struct sym_fw * 
sym_find_firmware(struct sym_chip *chip)
{
	if (chip->features & FE_LDSTR)
		return &sym_fw2;
#if	SYM_CONF_GENERIC_SUPPORT
	else if (!(chip->features & (FE_PFEN|FE_NOPM|FE_DAC)))
		return &sym_fw1;
#endif
	else
		return NULL;
}

/*
 *  Bind a script to physical addresses.
 */
void sym_fw_bind_script(struct sym_hcb *np, u32 *start, int len)
{
	u32 opcode, new, old, tmp1, tmp2;
	u32 *end, *cur;
	int relocs;

	cur = start;
	end = start + len/4;

	while (cur < end) {

		opcode = *cur;

		/*
		 *  If we forget to change the length
		 *  in scripts, a field will be
		 *  padded with 0. This is an illegal
		 *  command.
		 */
		if (opcode == 0) {
			printf ("%s: ERROR0 IN SCRIPT at %d.\n",
				sym_name(np), (int) (cur-start));
			++cur;
			continue;
		};

		/*
		 *  We use the bogus value 0xf00ff00f ;-)
		 *  to reserve data area in SCRIPTS.
		 */
		if (opcode == SCR_DATA_ZERO) {
			*cur++ = 0;
			continue;
		}

		if (DEBUG_FLAGS & DEBUG_SCRIPT)
			printf ("%d:  <%x>\n", (int) (cur-start),
				(unsigned)opcode);

		/*
		 *  We don't have to decode ALL commands
		 */
		switch (opcode >> 28) {
		case 0xf:
			/*
			 *  LOAD / STORE DSA relative, don't relocate.
			 */
			relocs = 0;
			break;
		case 0xe:
			/*
			 *  LOAD / STORE absolute.
			 */
			relocs = 1;
			break;
		case 0xc:
			/*
			 *  COPY has TWO arguments.
			 */
			relocs = 2;
			tmp1 = cur[1];
			tmp2 = cur[2];
			if ((tmp1 ^ tmp2) & 3) {
				printf ("%s: ERROR1 IN SCRIPT at %d.\n",
					sym_name(np), (int) (cur-start));
			}
			/*
			 *  If PREFETCH feature not enabled, remove 
			 *  the NO FLUSH bit if present.
			 */
			if ((opcode & SCR_NO_FLUSH) &&
			    !(np->features & FE_PFEN)) {
				opcode = (opcode & ~SCR_NO_FLUSH);
			}
			break;
		case 0x0:
			/*
			 *  MOVE/CHMOV (absolute address)
			 */
			if (!(np->features & FE_WIDE))
				opcode = (opcode | OPC_MOVE);
			relocs = 1;
			break;
		case 0x1:
			/*
			 *  MOVE/CHMOV (table indirect)
			 */
			if (!(np->features & FE_WIDE))
				opcode = (opcode | OPC_MOVE);
			relocs = 0;
			break;
#ifdef SYM_CONF_TARGET_ROLE_SUPPORT
		case 0x2:
			/*
			 *  MOVE/CHMOV in target role (absolute address)
			 */
			opcode &= ~0x20000000;
			if (!(np->features & FE_WIDE))
				opcode = (opcode & ~OPC_TCHMOVE);
			relocs = 1;
			break;
		case 0x3:
			/*
			 *  MOVE/CHMOV in target role (table indirect)
			 */
			opcode &= ~0x20000000;
			if (!(np->features & FE_WIDE))
				opcode = (opcode & ~OPC_TCHMOVE);
			relocs = 0;
			break;
#endif
		case 0x8:
			/*
			 *  JUMP / CALL
			 *  don't relocate if relative :-)
			 */
			if (opcode & 0x00800000)
				relocs = 0;
			else if ((opcode & 0xf8400000) == 0x80400000)/*JUMP64*/
				relocs = 2;
			else
				relocs = 1;
			break;
		case 0x4:
		case 0x5:
		case 0x6:
		case 0x7:
			relocs = 1;
			break;
		default:
			relocs = 0;
			break;
		};

		/*
		 *  Scriptify:) the opcode.
		 */
		*cur++ = cpu_to_scr(opcode);

		/*
		 *  If no relocation, assume 1 argument 
		 *  and just scriptize:) it.
		 */
		if (!relocs) {
			*cur = cpu_to_scr(*cur);
			++cur;
			continue;
		}

		/*
		 *  Otherwise performs all needed relocations.
		 */
		while (relocs--) {
			old = *cur;

			switch (old & RELOC_MASK) {
			case RELOC_REGISTER:
				new = (old & ~RELOC_MASK) + np->mmio_ba;
				break;
			case RELOC_LABEL_A:
				new = (old & ~RELOC_MASK) + np->scripta_ba;
				break;
			case RELOC_LABEL_B:
				new = (old & ~RELOC_MASK) + np->scriptb_ba;
				break;
			case RELOC_SOFTC:
				new = (old & ~RELOC_MASK) + np->hcb_ba;
				break;
			case 0:
				/*
				 *  Don't relocate a 0 address.
				 *  They are mostly used for patched or 
				 *  script self-modified areas.
				 */
				if (old == 0) {
					new = old;
					break;
				}
				fallthrough;
			default:
				new = 0;
				panic("sym_fw_bind_script: "
				      "weird relocation %x\n", old);
				break;
			}

			*cur++ = cpu_to_scr(new);
		}
	};
}